Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/86268
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dc.contributor.authorCourté, Marc Patricken
dc.contributor.authorAlaaeddine, M.en
dc.contributor.authorBarth, V.en
dc.contributor.authorTortech, L.en
dc.contributor.authorFichou, Denisen
dc.date.accessioned2017-11-08T02:34:01Zen
dc.date.accessioned2019-12-06T16:19:17Z-
dc.date.available2017-11-08T02:34:01Zen
dc.date.available2019-12-06T16:19:17Z-
dc.date.issued2017en
dc.identifier.citationCourté, M. P., Alaaeddine, M., Barth, V., Tortech, L., & Fichou, D. (2017). Structural and electronic properties of 2,2′,6,6′-tetraphenyl-dipyranylidene and its use as a hole-collecting interfacial layer in organic solar cells. Dyes and Pigments, 141, 487-492.en
dc.identifier.issn0143-7208en
dc.identifier.urihttps://hdl.handle.net/10356/86268-
dc.identifier.urihttp://hdl.handle.net/10220/44002en
dc.description.abstractThe accumulation of positive charges at the anodic interface considerably limits the efficiency of photovoltaic solar cells based on polymer/fullerene bulk heterojunctions (BHJs). Interfacial layers (IFLs) such as PEDOT:PSS improve charge injection but have no effect on the unbalanced electron/hole transport across the BHJ. We report here the use of 2,2′,6,6′-tetraphenyl-dipyranylidene (DIPO-Ph4), a planar quinoïd compound, as an efficient anodic IFL in organic solar cells based on BHJs made of poly(3-hexylthiophene)/[6,6]-phenyl-C61-butyric-acid-methyl-ester (P3HT:PCBM). When deposited under vacuum onto a glass substrate, DIPO-Ph4 thin films are constituted of densely packed and vertically aligned crystalline needles. Current-sensing atomic force microscopy (CS-AFM) reveals a considerable increase of the hole-carrying pathways in DIPO-Ph4 thin films as compare to PEDOT:PSS, thus revealing their hole transporting/electron blocking properties. Inserting a 10 nm thick IFL of DIPO-Ph4 in combination with a 5 nm thick PEDOT:PSS between the ITO electrode and the P3HT:PCBM film leads to photocurrent densities up to 11.5 mA/cm2 under AM 1.5G and conversion efficiencies up to 4.6%, that is substantially higher than PEDOT:PSS-only devices.en
dc.description.sponsorshipMOE (Min. of Education, S’pore)en
dc.language.isoenen
dc.relation.ispartofseriesDyes and Pigmentsen
dc.rights© 2017 Elsevier Ltd.en
dc.subjectInterfacial Layersen
dc.subjectOrganic Solar Cellsen
dc.titleStructural and electronic properties of 2,2′,6,6′-tetraphenyl-dipyranylidene and its use as a hole-collecting interfacial layer in organic solar cellsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.identifier.doihttp://dx.doi.org/10.1016/j.dyepig.2017.03.002en
item.grantfulltextnone-
item.fulltextNo Fulltext-
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